Muhammad Aminul Islam
Queensland University of Technology
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Featured researches published by Muhammad Aminul Islam.
international conference on control, automation and systems | 2008
Kyoung Kwang Ahn; Muhammad Aminul Islam; Dinh Quang Truong
Magneto-rheological (MR) fluid damper is a semi-active control device that has recently received more attention by the vibration control community. But inherent nonlinear hysteresis character of magneto-rheological fluid dampers is one of the challenging aspects for utilizing this device to achieve high system performance. So the development of accurate model is necessary to take the advantage their unique characteristics. Research by others has shown that a system of nonlinear differential equations can successfully be used to describe the hysteresis behavior of the MR damper. The focus of this paper is to develop an alternative method for modeling a damper in the form of centre average fuzzy interference system, where back propagation learning rules are used to adjust the weight of network. The inputs for the model are used from the experimental data. The resulting fuzzy interference system is satisfactorily represents the behavior of the MR fluid damper with reduced computational requirements. Use of the neuro-fuzzy model increases the feasibility of real time simulation.
Environmental Science: Processes & Impacts | 2015
M.M. Rahman; Svetlana Stevanovic; Muhammad Aminul Islam; Kirsten Heimann; Md. Nurun Nabi; George Thomas; Bo Feng; Richard J. Brown; Zoran Ristovski
Microalgae are considered to be one of the most viable biodiesel feedstocks for the future due to their potential for providing economical, sustainable and cleaner alternatives to petroleum diesel. This study investigated the particle emissions from a commercially cultured microalgae and higher plant biodiesels at different blending ratios. With a high amount of long carbon chain lengths fatty acid methyl esters (C20 to C22), the microalgal biodiesel used had a vastly different average carbon chain length and level of unsaturation to conventional biodiesel, which significantly influenced particle emissions. Smaller blend percentages showed a larger reduction in particle emission than blend percentages of over 20%. This was due to the formation of a significant nucleation mode for the higher blends. In addition measurements of reactive oxygen species (ROS), showed that the oxidative potential of particles emitted from the microalgal biodiesel combustion were lower than that of regular diesel. Biodiesel oxygen content was less effective in suppressing particle emissions for biodiesels containing a high amount of polyunsaturated C20-C22 fatty acid methyl esters and generated significantly increased nucleation mode particle emissions. The observed increase in nucleation mode particle emission is postulated to be caused by very low volatility, high boiling point and high density, viscosity and surface tension of the microalgal biodiesel tested here. Therefore, in order to achieve similar PM (particulate matter) emission benefits for microalgal biodiesel likewise to conventional biodiesel, fatty acid methyl esters (FAMEs) with high amounts of polyunsaturated long-chain fatty acids (≥C20) may not be desirable in microalgal biodiesel composition.
7TH BSME INTERNATIONAL CONFERENCE ON THERMAL ENGINEERING | 2017
S.M. Ashrafur Rahman; Faruque M. Hossain; Thuy Chu Van; Ashley Dowell; Muhammad Aminul Islam; Thomas J. Rainey; Zoran Ristovski; Richard J. Brown
In 2014, global demand for essential oils was 165 kt and it is expected to grow 8.5% per annum up to 2022. Every year Australia produces approximately 1.5k tonnes of essential oils such as tea tree, orange, lavender, eucalyptus oil, etc. Usually essential oils come from non-fatty areas of plants such as the bark, roots, heartwood, leaves and the aromatic portions (flowers, fruits) of the plant. For example, orange oil is derived from orange peel using various extraction methods. Having similar properties to diesel, essential oils have become promising alternate fuels for diesel engines. The present study explores the opportunity of using sweet orange oil in a compression ignition engine. Blends of sweet orange oil-diesel (10% sweet orange oil, 90% diesel) along with neat diesel fuel were used to operate a six-cylinder diesel engine (5.9 litres, common rail, Euro-III, compression ratio 17.3:1). Some key fuel properties such as: viscosity, density, heating value, and surface tension are presented. Engine performance (brake specific fuel consumption) and emission parameters (CO, NOX, and Particulate Matter) were measured to evaluate running with the blends. The engine was operated at 1500 rpm (maximum torque condition) with different loads. The results from the property analysis showed that sweet orange oil-diesel blend exhibits lower density, viscosity and surface tension and slightly higher calorific value compared to neat diesel fuel. Also, from the engine test, the sweet orange oil-diesel blend exhibited slightly higher brake specific fuel consumption, particulate mass and particulate number; however, the blend reduced the brake specific CO emission slightly and brake specific NOX emission significantly compared to that of neat diesel.In 2014, global demand for essential oils was 165 kt and it is expected to grow 8.5% per annum up to 2022. Every year Australia produces approximately 1.5k tonnes of essential oils such as tea tree, orange, lavender, eucalyptus oil, etc. Usually essential oils come from non-fatty areas of plants such as the bark, roots, heartwood, leaves and the aromatic portions (flowers, fruits) of the plant. For example, orange oil is derived from orange peel using various extraction methods. Having similar properties to diesel, essential oils have become promising alternate fuels for diesel engines. The present study explores the opportunity of using sweet orange oil in a compression ignition engine. Blends of sweet orange oil-diesel (10% sweet orange oil, 90% diesel) along with neat diesel fuel were used to operate a six-cylinder diesel engine (5.9 litres, common rail, Euro-III, compression ratio 17.3:1). Some key fuel properties such as: viscosity, density, heating value, and surface tension are presented. Engine pe...
Energies | 2013
Muhammad Aminul Islam; Marie Magnusson; Richard J. Brown; Godwin A. Ayoko; Md. Nurun Nabi; Kirsten Heimann
Fuel | 2015
Muhammad Aminul Islam; M.M. Rahman; Kirsten Heimann; Md. Nurun Nabi; Zoran Ristovski; Ashley Dowell; George Thomas; Bo Feng; Nicolas von Alvensleben; Richard J. Brown
Procedia Engineering | 2013
Muhammad Aminul Islam; Godwin A. Ayoko; Richard J. Brown; Doug Stuart; Kirsten Heimann
Journal of Mechanical Science and Technology | 2009
Kyoung Kwan Ahn; Dinh Quang Truong; Muhammad Aminul Islam
Energy Conversion and Management | 2015
Nurun Nabi; Mostafizur Rahman; Muhammad Aminul Islam; Farhad M. Hossain; Peter Brooks; William N. Rowlands; John Tulloch; Zoran Ristovski; Richard J. Brown
Energy Conversion and Management | 2015
Muhammad Aminul Islam; Richard J. Brown; Peter M. Brooks; M.I. Jahirul; Henning Bockhorn; Kirsten Heimann
Energy Conversion and Management | 2014
Muhammad Aminul Islam; Richard J. Brown; Ian M. O’Hara; Megan Kent; Kirsten Heimann